The best way to determine your hat size is to measure the head circumference of the widest part of your head. Using a measuring tape, place around your head, crossing the temples and mid forehead. Ensure the tape is held firmly but not too tight.
Small / 55cm – Medium / 57cm – Large / 59cm
For measurements that are in-between sizes, we suggest you choose the next size up. If your hat is loose, you can purchase a hat filler that can be easily inserted inside the sweatband to allow for a more secure fitting hat.